Zoning & development intelligence · Massachusetts

Know what you can build.

Enter a Massachusetts address to see its zoning district, allowed uses, dimensional limits, development capacity — and the bylaw text behind every answer.

Try:23 Summer St, AndoverNorth AndoverMethuenHaverhill
287
Towns with zoning maps
76
Towns with complete data
36,146
Zoning rules parsed
26,588
Use permissions mapped

Early preview — coverage varies by town. Check the Towns page for what each town has.

Every property starts with three questions

What. How much. Why.

Example parcel · 23 Summer St, Andover · SRA
What can I build?
Single-familyBy-right
ADUBy-right
Two-familySpecial permit
MultifamilySpecial permit
How much can I build?
Frontage50 ft min
Height35 ft max
Lot coverage30% max
UnitsScreened
Why?
Bylaw section§ Table of Use Regulations
Original languageIncluded
GIS layerMassGIS · DEP wetlands
Fetched2026-04-04
Property record

One address. One development record.

Each parcel resolves to a single record joining parcel geometry, zoning district, overlays, allowed uses, dimensional rules and development capacity — all linked to the original bylaw.

→Parcel → zoning district → overlays
→Allowed uses → dimensional rules → subdivision screen
→Buildable envelope → capacity → source documents
Browse covered towns →
23 Summer St
Andover, MA · SRA · ● Complete data
Zoning district
SRA
Lot area
0.83 ac
Main risk
Wetland
Audit chain

Every answer, backed by the source.

PlotMax shows how it reached each determination: the bylaw section, the original legal language, the GIS layer and the date it was fetched. Traceable facts, not summaries.

“Accessory dwelling unit … permitted as of right …”
How did PlotMax determine this?
Property
23 Summer St, Andover
Parcel
MassGIS L3 parcel
Zoning district
SRA
Applicable bylaw
Andover Zoning Bylaw (ecode360)
Section
Table of Use Regulations
Determination
ADU · By-right
PlotMax

Analyze a Massachusetts property.

Address → parcel → potential → proof.

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